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Compressed Air - Air Flow and Recommended Pipe Size

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Recommended sizes for compressed air pipe lines:

Based on line presssure 90 psig (620 kPa, 6.2 bar).

  • 1 psig = 6.9 kPa = 0.069 bar
  • 1 inch = 25.4 mm
  • 1 ft (foot) = 0.3048 m
  • 1 scfm = 0.472 nl/s

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